Mount for tension-pulleys for spinning and twisting machines.



C. W. BOARDIVIAN. MOUNT FOR TENSION PULLEYS FOR SPINNING AND TWISTINGMACHINES.

APPLICATION FILED JAN. 2. I9l5- Patented Mar. 25, 1919.

[72 22a 72 for [r inf/96 14f 500 0070/7,

71 21 72 855 e s. wfifiym jazzy CHARLES W. BOARDMAN, 0F IPAWTUCKET,RHODE ISLAND.

MOUNT FOR TENSION-PULLEYS FOR SPINNING AND TWISTING MACHINES.

Specification of Letters Patent.

Patented Mar. 25, 1919.

Application filed January 2, 1915. Serial No. 8.

To all whom it may concern:

Be it known that I, CHARLES W. BoAnD- MAN, a citizen of the UnitedStates, residing at Pawtucket, in the county of Providence and State ofRhode Island, have invented certain new and useful Improvements inMounts for Tension-Pulleys for Spinning and Twisting Machines, of whichthe following is a specification.

My present invention relates to means for adjustably positioning themounted banddriven take-up ortension-pulleys employed in connection withthe spindles of textile spinning and twisting machines, substantially asherein set forth and clalmed.

In devices of this general character heretofore constructedindependently adjustable eccentric sleeves or cams were employed, thearrangement being such that the axial relation of the oscillatorypulley-carrying hanger was necessarily varied, up 01' down, withrelation to the horizontal longitudinal axis of the main supportingmember or rod and the driving drum, the result being to cause a degreeof non-parallelism of the sald axes, corresponding with the degree ofadjustment.

The object I have in view in my present invention is to provide atension-adjusting device in which the adjustments are capable of beingreadily efieoted to the extent desired, maximum or minimum, and at thesame time maintain parallelism of the axes, thereby causing a more evenand uniform action of the tension-pulley on the belt.

By means of my improvement for regulating' the tension of thedriving-band running on the tension-pulley, the adjusting device isconstructed so that the face of the pulley is caused to aline properlyboth laterally and tangentially with the respective runs or folds of thebelt as they pass to and from the pulley and drum. The said adjustingmeans employed includes a centrally cored longitudinal sleeve secured toa horizontally supported rod, a swivel-mounted bearing member positionedfiatwise on the sleeve, and means for securing the bearing member inadjusted relation to the parts whereby the axis of the oscillatingtension-pulley is or may be maintained in planes parallel with the axisof the driving-drum.

In the accompanying sheet of drawings, Figure 1 is a vertical transversesectional view of a textile spinning-machine showing my improvementnormally connected therewith, parts of the machinebeing' omitted;

Fig. 2 is a corresponding top plan view showing one group of band-drivenspindles; Fig. 3 is an enlarged top plan view of a normally fixedswivel-mounted independently adjustable bearing element on which thepulley-carrying weight-lever is arranged to oscillate in verticalplanes; Fig. 4c is a corresponding end elevation of the partsrepresented in Fig. 3; and Fig. 5 is a longitudinal section showing theparts in the central axial position, parallel with the axis of thedriving-drum.

In the drawings, A indicates the device or hanger as a whole; the samecomprising a fixed supporting rod B; a concentric sleeve C adjustablyslidable on the rod; said sleeve member having a flat surface, a bearingmember D swivel-mounted horizontally on the sleeve in engagement withsaid flat sur face, a weight-lever E mounted to oscillate on the bearingmember D; a yoke or fork F attached to and depending from an arm of theweight-lever, and a tension or band take-up pulley H revolubly mountedin the forked member.

A revoluble driving-drum a extends longitudinally of the machine andbetween the oppositely disposed bolster-rails b, b, in which are mountedbolsters c carrying revoluble spindle-blades h and their whirls f drivenby an open endless flexible band 8; the band also passes around the rimof and rotates the take-up or tension-pulley H mounted for swingingmovement toward and from the driving-drum. Said tension-pulley is fixedto an axle revolubly mounted in bearings removably positioned in a forkF suspended from an arm 6' extending downwardly from the lever E. Aclamping bolt 2' passing through said fork and arm serves to hold thefork member in laterally adjusted positions. The lever E is alsoprovided with a substantially horizontal arm 0 having a counter-weightto at its free end. The inner ends of said arms merge into an opensemi-circular head or body part 6, having a concave surface forming aseat arranged for rocking engagement with the convex stationaryhorizontal bearing surface m of the element D, later described. The wallof the upper portion of the said head part 6 is provided with a centralelongated arc-shaped transverse opening 2 through which a boss 03 ofmember D extends. r

The fixed non-revoluble rod B is disposed level and parallel with thelongitudinal axis of the driving-drum a and at a distancelat levelplanes with relation to the longitudinal erally from it. To the rod isadjustably fixed a number of the sleeves 0 (one for each group ofspindles) each sleeve having on its upper side a central screw-tappedvertical boss 0 (Fig. 5) arranged at right an- 7 gles with thelongitudinal horizontal axis of the sleeve. served, bears flatwisehorizontally at m upon and is clamped to the upper fiat surface m of thesleeve.

' The bearing member is also provided with a central hollow rectangularlug cl, arrangedto receive the pivot or boss 0 the lug itself extendingthrough the said elon- V gated, arc-shaped guide-slot 6 therebypermitting the member D to be adjusted angularly a limited extent on thepivot in a horizontal plane, the ends of the slot serving to limit theoscillating movements of the weight-lever E.

By means of this construction the bearing member D, interposed betweenthe sleeve C and lever E may be swiveled fiatwise on the member C at anangle, or obliquely, in a horizontal plane a limited extent relativelyto the axis of the horizontal driving-drum, whereby the hanger and itspulley may be adjusted or swung bodily in a lateral direction on theboss 0 until the upper and lower folds m, m of the band are caused toproperly aline with the. rim of the tension pulley,

firmly clamped to the rod B by means of the screw 1:, check-nut c andwasher 0 See Fig. 5. i V V In my improved tension-adjusting device, thesame, when in normal swinging action, acts to maintain a substantiallyuniform tension or pull upon the band, in that the counter-weightedpulley carrying hanger is V caused to swing the pulley laterally in avertical plane inclined to the axis of the driving-drum, thereby, whenmoved from its normal central position, causing the'face of The memberD, it will be oh ning machine provided with my improvedtension-controlling means, the corresponding adjustments are capable ofbeing, eflected and maintained in parallel horizontal or axes of therevoluble driving-drum and the fixed rod or member supporting theadjust- 7 ing device A.

I claim as my invention 1. A spindle-driving mechanism having incombination a horizontal driving drum, a stationary supporting rodarranged parallel with said drum, a sleeve, mounted on said rod, abearing member swivel-mounted onsaid sleeve, and a pulley-hanger mountedon said bearing member. 7 V

2. A spmdle-drlving mechanism having in combination a horizontal drivingdrum,

stationary supporting rod arranged parallel with said drum, a sleevemountedon said rod, a bearing member swivel-mounted on said sleeve, apulleydaanger mounted on said hearin member and a stoo for limitin the rswiveling movement of said bearing member. A spindle-driving mechanismhavlng-in combination a horizontal driving drum, a

stationary supporting rod arranged parallel with said drum, a sleevemounted on said rod and provided with a pivot, a bearing member mountedon said sleeve and ar: ranged to swivel about said pivot, and apulley-hanger mounted on said bearing member.

i. A spindle-driving mechanism having in combination a horizontaldriving drum, a stationary supporting rod arranged parallel with saiddrum, -a sleeve mounted on-said rod, a bearing member swivel-mounted onsaid sleeve, and a pulley hanger supported and adapted to oscillate uponsaid bearing member. v

In testimony whereof I have ailixed my signature in presence, of twowitnesses.

CHARLES W. BOARDMAN. y

Witnesses: V

EUGENE C. WILLIAMS, HERBERT J. SUT'roN.

Copies oflthis patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D; C. 7

